High severity · published Jul 22, 2022
CVE-2022-2327
Use-after-free in io_uring ad work_flags in Linux Kernel
7.8
CVSS
0.3%
EPSS
No
On KEV
Description
io_uring use work_flags to determine which identity need to grab from the calling process to make sure it is consistent with the calling process when executing IORING_OP. Some operations are missing some types, which can lead to incorrect reference counts which can then lead to a double free. We recommend upgrading the kernel past commit df3f3bb5059d20ef094d6b2f0256c4bf4127a859
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before df3f3bb5059d20ef094d6b2f0256c4bf4127a859 · source: vendor, NVD
HF
H300s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410c Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H500s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H700s Firmware · Netapp
All versions, or not specified · source: NVD
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
before V1.1 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-2327
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-2327
Mailing List
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=df3f3bb5059d20ef094d6b2f0256c4bf4127a859
Patch
https://kernel.dance/#df3f3bb5059d20ef094d6b2f0256c4bf4127a859
Third Party Advisory
https://security.netapp.com/advisory/ntap-20230203-0009/
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
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